Multipass Blueprints

This repository contains Multipass Blueprint definitions. They augment the offerings already available from the Ubuntu Cloud Images. You can list the available images with multipass find and run them with multipass launch:

$ multipass find
Image                       Aliases           Version          Description
# ...
minikube                                      latest           minikube is local Kubernetes

$ multipass launch minikube
Launched: minikube

$ multipass exec minikube -- minikube status
minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured

Schema

The blueprints are defined in YAML of the following format (required fields marked with *):

# v1/<name>.yaml

description: <string>      # * a short description of the blueprint ("tagline")
version: <string>          # * a version string

runs-on:                   # a list of architectures this blueprint can run on
- arm64                    #   see https://doc.qt.io/qt-5/qsysinfo.html#currentCpuArchitecture
- x86_64                   #   for a list of valid values

instances:
  <name>:                  # * equal to the blueprint name
    image: <base image>    # a valid image alias, see `multipass find` for available values
    limits:
      min-cpu: <int>       # the minimum number of CPUs this blueprint can work with
      min-mem: <string>    # the minimum amount of memory (can use G/K/M/B suffixes)
      min-disk: <string>   # and the minimum disk size (as above)
    timeout: <int>         # maximum time for the instance to launch, and separately for cloud-init to complete
    cloud-init:
      vendor-data: |       # cloud-init vendor data
        <string>

Testing

On Linux, the multipass find command looks for blueprints in a URL provided by an environment variable, MULTIPASS_BLUEPRINTS_URL. To locally test your blueprints you would need to override the systemd service with the following setting:

[Service]
Environment="MULTIPASS_BLUEPRINTS_URL=https://github.com/USERNAME/multipass-blueprints/archive/refs/heads/BRANCH_NAME.zip"

This can be done by using the systemctl edit utility:

sudo systemctl edit snap.multipass.multipassd.service

followed by service restart:

sudo snap restart multipass

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